<#--
  ~ Licensed to the Apache Software Foundation (ASF) under one or more
  ~ contributor license agreements.  See the NOTICE file distributed with
  ~ this work for additional information regarding copyright ownership.
  ~ The ASF licenses this file to You under the Apache License, Version 2.0
  ~ (the "License"); you may not use this file except in compliance with
  ~ the License.  You may obtain a copy of the License at
  ~
  ~     http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->
    
    private RuleConfiguration createMaskRuleConfiguration() {
        return new MaskRuleConfiguration(createMaskTableRuleConfiguration(), createMaskAlgorithms());
    } 
            
    private Collection<MaskTableRuleConfiguration> createMaskTableRuleConfiguration() {
        Collection<MaskTableRuleConfiguration> result = new LinkedList<>();
        result.add(new MaskTableRuleConfiguration("t_order_item", Collections.singletonList(new MaskColumnRuleConfiguration("phone", "keep_first_n_last_m_mask"))));
        return result;
    }
    
    private Map<String, AlgorithmConfiguration> createMaskAlgorithms() {
        Map<String, AlgorithmConfiguration> result = new LinkedHashMap<>();
        Properties props = new Properties();
        props.put("first-n", 3);
        props.put("last-m", 4);
        props.put("replace-char", "*");
        result.put("keep_first_n_last_m_mask", new AlgorithmConfiguration("KEEP_FIRST_N_LAST_M", props));
        return result;
    }
